collStats counters on time series
What changes in collStats counters on time series compared with MongoDB and what your application has to do.
This difference is of the Different kind.
What MongoDB does
collStats.timeseries carries internal bucket counters of its engine.
What TeselaDB does
The counters that make no sense in TeselaDB, such as numActiveBuckets or the bucket reopening ones, are missing.
What your application has to do
If your monitoring reads them, make it treat them as absent.